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(R)-3-((4-methoxybenzyl)oxy)-2-methylpropanoic acid is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

640283-74-5

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640283-74-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 640283-74-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,4,0,2,8 and 3 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 640283-74:
(8*6)+(7*4)+(6*0)+(5*2)+(4*8)+(3*3)+(2*7)+(1*4)=145
145 % 10 = 5
So 640283-74-5 is a valid CAS Registry Number.

640283-74-5Relevant academic research and scientific papers

Iterative Synthesis of Polydeoxypropionates Based on Iridium-Catalyzed Asymmetric Hydrogenation of α-Substituted Acrylic Acids

Che, Wen,Wen, Danyang C.,Zhu, Shou-Fei,Zhou, Qi-Lin

, p. 3305 - 3309 (2018/06/11)

A novel iterative protocol for the synthesis of polydeoxypropionates was developed based on iridium-catalyzed asymmetric hydrogenation of α-substituted acrylic acids. The catalyst loading can be as low as 0.01 mol %, and the overall yield for one iterativ

Chemoenzymatic asymmetric total synthesis of nonanolide (Z)-cytospolides D, E and their stereoisomers

Rej, Rohan Kalyan,Nanda, Samik

, p. 860 - 871 (2014/03/21)

Chemoenzymatic asymmetric total synthesis of the (Z)-isomer of the naturally occurring decanolide cytospolides D, E and six stereoisomers is reported. The main highlight of the synthetic venture involves ring-closing metathesis (RCM) reaction of a suitably functionalized ester compound, which was assembled by the Yamaguchi coupling of the required acid and alcohol fragments. The alcohol fragment was ac- cessed by two alternative chemoenzymatic processes, one being hydroxynitrile lyase mediated hydrocyanation, whereas lipase-catalyzed transesterification was the key sep in the second route. The acid fragment was constructed by an enantioselective enzymatic desymmetrization (EED) of prochiral 2-methyl-1,3-propanediol and Corey-Bakshi-Shibata (CBS) mediated stereoselective carbonyl reduction.

Chemoenzymatic Asymmetric Total Synthesis of Nonanolide (Z)-Cytospolides D, e and Their Stereoisomers

Rej, Rohan Kalyan,Nanda, Samik

, p. 860 - 871 (2015/10/05)

Chemoenzymatic asymmetric total synthesis of the (Z)-isomer of the naturally occurring decanolide cytospolides D, E and six stereoisomers is reported. The main highlight of the synthetic venture involves ring-closing metathesis (RCM) reaction of a suitably functionalized ester compound, which was assembled by the Yamaguchi coupling of the required acid and alcohol fragments. The alcohol fragment was accessed by two alternative chemoenzymatic processes, one being hydroxynitrile lyase mediated hydrocyanation, whereas lipase-catalyzed transesterification was the key sep in the second route. The acid fragment was constructed by an enantioselective enzymatic desymmetrization (EED) of prochiral 2-methyl-1,3-propanediol and Corey-Bakshi-Shibata (CBS) mediated stereoselective carbonyl reduction.

A Combinatorial Synthesis of a Macrosphelide Library Utilizing a Palladium-Catalyzed Carbonylation on a Polymer Support

Takahashi, Takashi,Kusaka, Shin-Ichi,Doi, Takayuki,Sunazuka, Toshiaki,Omura, Satoshi

, p. 5230 - 5234 (2007/10/03)

Supported total synthesis: The combinatorial synthesis of a 122-membered macrosphelide library including macrosphelides A, C, E, and F (see picture) has been achieved based on a unique strategy for a three-component coupling utilizing a palladium-catalyzed chemoselective carbonylation and an unprecedented macrolactonization on a polymer support.

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